/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.core;

import java.util.HashMap;
import java.util.Map;

public enum JbfilterComparatorKeyword {
	
	eq("="),
	lt("<"),
	gt(">"),
	le("<="),
	ge(">=");
	
	private String symbol;
	private static final Map<String, JbfilterComparatorKeyword> symbolMap = new HashMap<String, JbfilterComparatorKeyword>();
	
	static {
		for (JbfilterComparatorKeyword kw : JbfilterComparatorKeyword.values()) {
			symbolMap.put(kw.getSymbol(), kw);
		}
	}
	
	private JbfilterComparatorKeyword(
			String symbol) {
		this.symbol = symbol;
	}

	public static JbfilterComparatorKeyword toJbfilterComparatorKeyword(String symbol) {
		return symbolMap.get(symbol);
	}

	public String getSymbol() {
		return symbol;
	}
	
}
